package svn_incremental;

import java.awt.FileDialog;
import java.awt.FlowLayout;
import java.awt.Menu;
import java.awt.MenuBar;
import java.awt.MenuItem;
import java.awt.TextArea;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

import javax.swing.JFrame;

public class FileDialogs extends JFrame {
	Menu menu;
	MenuBar mbar;
	MenuItem open, load;
	File file;
	FileReader fread;
	BufferedReader breader;
	FileWriter fwiter;
	BufferedWriter bwiter;
	TextArea area;
	FileDialog log_save, log_open;

	FileDialogs() {
		menu = new Menu("对话框");
		mbar = new MenuBar();
		load = new MenuItem("load");
		open = new MenuItem("open");
		menu.add(load);
		menu.add(open);
		mbar.add(menu);
		log_save = new FileDialog(this, "保存文件对话框", FileDialog.SAVE);
		log_open = new FileDialog(this, "打开文件对话框", FileDialog.LOAD);
		setMenuBar(mbar);
		setBounds(100, 100, 500, 500);
		setLayout(new FlowLayout());
		setVisible(true);
		validate();
		area = new TextArea();
		add(area);
		log_save.addWindowListener(new WindowAdapter() {
			@Override
			public void windowClosing(WindowEvent arg0) {
				// TODO Auto-generated method stub
				log_save.setVisible(false);
				super.windowClosing(arg0);
			}

		});
		log_open.addWindowListener(new WindowAdapter() {
			@Override
			public void windowClosing(WindowEvent e) {
				// TODO Auto-generated method stub
				log_open.setVisible(false);
				super.windowClosing(e);
			}
		});
		open.addActionListener(new ActionListener() {

			@Override
			public void actionPerformed(ActionEvent arg0) {
				// TODO Auto-generated method stub
				log_open.setVisible(true);
				area.setText(null);
				String s = null;
				if (log_open.getFile() != null) {
					File file = new File(log_open.getDirectory(), log_open
							.getFile());
					try {
						fread = new FileReader(file);
						breader = new BufferedReader(fread);
						while ((s = breader.readLine()) != null) {
							area.append(s + "\n");
						}
						breader.close();
						fread.close();
					} catch (FileNotFoundException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
			}

		});
		load.addActionListener(new ActionListener() {

			@Override
			public void actionPerformed(ActionEvent arg0) {
				// TODO Auto-generated method stub
				log_save.setVisible(true);
				String s = null;
				File file = new File(log_save.getDirectory(), log_save
						.getFile());
				try {
					fwiter = new FileWriter(file);
					bwiter = new BufferedWriter(fwiter);
					s = area.getText();
					bwiter.write(area.getText(), 0, (area.getText().length()));
					bwiter.close();
					fwiter.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}

		});
	}

	public static void main(String[] args) {
		new FileDialogs();
	}

}